Spend less time waiting for levels to load and more time exploring fantastic open worlds and taking on the competition with the 4TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD. Designed specifically with gaming enthusiasts in mind, this high-end SSD is designed to deliver extreme PCIe 4.0 performance with up to 7300 MB/s sequential read speeds, which is about 4% faster than a regular SN850 drive. The SN850X also features sequential write speeds of up to 6600 MB/s. With random read and write speeds of 1,200,000 IOPS and 1,100,000 IOPS, respectively, demanding games and applications load in a flash. Additionally, the integrated heat sink helps to maintain sustained performance during intense gaming sessions and data transfers while still fitting PlayStation 5 consoles along with many desktop and laptop systems. Game Mode 2.0 pushes Windows gaming performance even further with features such as load prediction.
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Key Features
- 4TB Storage Capacity
- M.2 2280 Form Factor
- PCIe 4.0 x4 Interface
- Up to 7300 MB/s Sequential Read Speed
Spend less time waiting for levels to load and more time exploring fantastic open worlds and taking on the competition with the 4TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD. Designed specifically with gaming enthusiasts in mind, this high-end SSD is designed to deliver extreme PCIe 4.0 performance with up to 7300 MB/s sequential read speeds, which is about 4% faster than a regular SN850 drive. The SN850X also features sequential write speeds of up to 6600 MB/s. With random read and write speeds of 1,200,000 IOPS and 1,100,000 IOPS, respectively, demanding games and applications load in a flash. Additionally, the integrated heat sink helps to maintain sustained performance during intense gaming sessions and data transfers while still fitting PlayStation 5 consoles along with many desktop and laptop systems. Game Mode 2.0 pushes Windows gaming performance even further with features such as load prediction.
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WD SN850X Internal SSD Overview
Near-Max PCIe Gen 4 Speeds
The WD_BLACK SN850X NVMe SSD delivers output approaching the limits of the PCIe Gen 4 interface to help you get ultra-fast performance from your system.
Game Mode 2.0
Game Mode boosts the performance of your Windows-based computer system with features such as load prediction to ready game assets, overhead balancing, and adaptive thermal management.
Room for Games
With 4TB of storage, you'll have space to install massive games alongside applications and video clips of your best moments.
Tough Design
The WD_BLACK SN850X is built to last with a 1.75 million hour MTTF (mean time to failure) and an endurance of 2400TB.
UPC: 619659209773
WD SN850X Internal SSD Specs
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General
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WD SN850X Internal SSD Reviews
Spectacular value for Thunderbolt Storage and as NAS Storage
By Kevin
Rated 5 out of 5
Date: 2025-04-21
I have several of these. I used some of these in my video editing workflow in a Thunderbolt 4 enclosure for use with my Mac Studio Max, and see at least a 25% ROI every workday of use compared to Thunderbolt hdd RAID or even Thunderbolt 4 NVMe 3.0 solutions using other vendor's M.2. I also have 2 of them in a UGreen NAS for fast storage and cache (they are never breaking a sweat in that bus, but for about $1100 per 16TB, I will never have any regret).
WD customer service
By B
Rated 2 out of 5
Date: 2025-03-26
After 11 months of very light use as a backup drive for my photos the drive failed completely. I called WD SSD division for a RMA. The e-mail I received said I would receive a replacement 6 to 7 days after the warehouse received my defective drive. WD received my disk 5 weeks ago. I have made two calls to check on the status and on both calls I was assured the drive would would be sent out as soon as possible. I have not received it yet. Very discouraging. I have two other drives and the work fine. My only concern is with their warranty service.
See any errors on this page?
Will this fit inside a Msi GE76 Raider 11ue?
Will this fit inside a Msi GE76 Raider 11ue?
M.2 drives with heatsinks, such as the WD 4TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD with Heatsink, are not recommended for use inside laptops. A drive without a heatsink should be used instead.
Date published: 2024-11-24
Can i use this in a ps5?
Can i use this in a ps5?
I would prefer Seagate 4TB FireCuda 530 PCIe 4.0 x4 NVMe M.2 Internal SSD with Heatsink (SEZP4GM3A023) due to the heat sink being deigned for use in the PS5.
Date published: 2024-09-28
Since the Heatsink would interfere with the OWC ...
Since the Heatsink would interfere with the OWC Express 4M2 fan, could I remove it and then it would work?
We do not recommend attempting to remove the WD 2TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD with Heatsink's heatsink.
Date published: 2023-07-18
How long is the warranty?
How long is the warranty?
The WD 4TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD has a Limited 5-Year Warranty.
Date published: 2022-12-28
Confused abt 2 answers on 4M2 compatibility with ...
Confused abt 2 answers on 4M2 compatibility with SN850X w/heatsink.. 1 says it works & 1 says it doesn't, which is it?
The WD 2TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD with Heatsink is not compatible with the OWC Express 4M2 4-Slot M.2 NVMe SSD Enclosure. I would recommend using the non heat sink version of the SN850X instead.
Date published: 2023-07-19
I would like to buy and used in Malaysia, can the ...
I would like to buy and used in Malaysia, can the 5 years warranty applicable in Malaysia?
This WD 2TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD, would come with a 5 year USA manufacturers warranty.
Date published: 2022-11-08
Would this be compatible in MSI GP66 with ...
Would this be compatible in MSI GP66 with heatsink?
The WD 2TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD is compatible with the MSI GP66 Leopard Gaming Laptop, but the heatsink would not be recommended due to limited clearance inside the laptop chassis. The version without the heatsink should be used instead.
Date published: 2024-03-28
Is the 8TB single sided?
Is the 8TB single sided?
The WD 8TB WD_BLACK SN850X Gaming Internal NVMe PCIe 4.0 SSD is double-sided.
Date published: 2025-01-28